CN106171004A

CN106171004A - A kind of RLC packet shunt method and base station

Info

Publication number: CN106171004A
Application number: CN201580000691.8A
Authority: CN
Inventors: 吴环宇
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-02-09
Filing date: 2015-10-29
Publication date: 2016-11-30
Anticipated expiration: 2035-10-29
Also published as: US20170339599A1; EP3247148A4; ES2735407T3; HK1226234A1; CN106171004B; EP3247148B1; US10440611B2; KR101927017B1; EP3247148A1; WO2016127666A1; KR20170116096A; JP2018510548A

Abstract

The present invention relates to communication technical field, particularly relate to a kind of RLC packet shunt method and base station, relatively greatly thus the performance issue of the UE under the CA scene of non-ideal passback HetNet can be affected in order to the propagation delay time between solving due to grand micro-base station；In the embodiment of the present invention, micro-base station can ask required RLC packet before being scheduling, RLC packet needed for micro-base station just can be sent to micro-base station by so macro base station in advance, thus reduces the propagation delay time between macro base station and micro-base station as far as possible, improves the receptivity of UE.

Description

A kind of RLC packets shunt method and base station

This application claims submitted Patent Office of the People's Republic of China, Application No. PCT/CN2015/072572, entitled " a kind of RLC packets shunt method and base station " on 2 9th, 2015, and require in August in 2015 submit within 25th Patent Office of the People's Republic of China, Application No. PCT/CN2015/088049, the two pieces Chinese patent application of entitled " a kind of RLC packets shunt method and base station " priority, entire contents are hereby incorporated by reference in the application.

Technical field

The present invention relates to communication technical field, more particularly to a kind of RLC packets shunt method and base station.

Background technology

Long Term Evolution (Long Term Evalution, LTE) system includes packet-based core networks (the Evolved Packet Core of evolution, EPC), evolution base station (Evolved NodeB, eNodeB) and user equipment (User Equipement, UE).Wherein, EPC is core network part, including is responsible for the mobile management entity (Mobility Mangement Entity, MME) of signaling processing, is responsible for the gateway (Serving, Gateway, SGW) of data processing.ENodeB is connected with EPC by S1 interfaces, is connected between eNodeB by X2 interface, is connected between eNode B and UE by Uu interfaces.

The universal land radio access web (Evolved Universal Terrestrial Radio Access Network, E-UTRAN) of evolution, is made up of eNodeB, is responsible for and wireless related function.E-UTRAN protocol frames are divided into user plane protocol and chain of command agreement.User face protocol stack includes PDCP (Packet Data Convergence Protocol, PDCP), wireless spread-spectrum technology (Radio Link Control,) and MAC layer (Media Access Control, MAC) RLC.

Fig. 1 is referred to, in the prior art, packet can be from PDCP entity transmissions to RLC entities.RLC entities can include transparent mode (Tranparent, TM), Unacknowledged Mode (Unacknowledged Mode, UM) and affirmation mode (Acknowledged Mode, AM).The RLC entities for AM shown in Fig. 1.

For the carrier aggregation of the heterogeneous network (Heterogeneous Network, HetNet) of ideal passback (Carrier Aggregation, CA) scene, under RLC AM patterns, packet can be diverted to main plot (Primary Cell, Pcell macro base station (Macro eNodeB) and secondary cell (Secondary Cell belonging to), Scell the micro-base station (Micro eNodeB) belonging to), to deliver a packet to user equipment (User Equipment respectively by main plot and secondary cell, UE), data transmission efficiency is improved.

It is usually non-ideal passback between Macro eNodeB and Micro eNodeB in real network, because the propagation delay time between Macro eNodeB and Micro eNodeB is larger, influences the performance of the UE under non-ideal passback HetNet CA scenes.

The content of the invention

The embodiment of the present invention provides a kind of RLC packets shunt method and base station, to solve, due to the performance issue of the UE under the larger CA scenes so as to influence non-ideal passback HetNet of the propagation delay time between grand micro-base station.

The first aspect of the present invention there is provided a kind of RLC packets shunt method, including：

Macro base station receives the RLC data packet request message that micro-base station is sent, wherein, the RLC data packet requests message is used for the first quantity of the RLC packets that the micro-base station asks the micro-base station to be sent by secondary cell to CAUE to the macro base station, the RLC data packet requests message is that the micro-base station is sent to the macro base station at the first moment, time difference between first moment and the second moment is T, wherein T is more than or equal to 2t, second moment be the micro-base station to the UE send the first quantity RLC packets at the time of, the t is the unidirectional transmission time delay between the micro-base station and the macro base station；

The macro base station is according to the RLC data packet requests message, determine the macro base station in T-t durations by the second quantity from main plot to the UE RLC packets sent, wherein the initial time of the T-t durations is the macro base station at the time of receive the RLC data packet requests message；

According to the vertical order of sequence number of RLC packets to be sent, the macro base station is the second quantity RLC packets before the macro base station distribution from the RLC packets to be sent, and be institute since first RLC packet after sequence number is located at the preceding second quantity RLC packets State micro-base station and distribute the first quantity RLC packets；

The first quantity RLC packets are sent to the micro-base station by the macro base station.

With reference in a first aspect, in the first possible implementation of first aspect, methods described also includes：

The second quantity RLC packets are sent to the UE by the macro base station by the main plot.

With reference to the first possible implementation of first aspect, in second of possible implementation of first aspect, methods described also includes：

The macro base station receives the ACK/NACK information that the UE is sent by the main plot, and the ACK/NACK information includes the feedback information that the UE is directed to the second quantity RLC packets for the feedback information and the UE of the first quantity RLC packets.

With reference to second of possible implementation of first aspect, in the third possible implementation of first aspect, after the macro base station receives the ACK/NACK information that the UE is sent by the main plot, methods described also includes：

If the feedback information for the first quantity RLC packets that the macro base station is received includes NACK, the macro base station judges that the micro-base station carries out whether HARQ results in HARQ merging gains by secondary cell RLC packets corresponding to the NACK；

If resulting in HARQ merges gain, the NACK is sent to the micro-base station by the macro base station, and indicates that the micro-base station retransmits the RLC packets using HARQ modes to the UE.

With reference to the third possible implementation of first aspect, in the 4th kind of possible implementation of first aspect, the macro base station judges that the micro-base station carries out whether HARQ results in HARQ merging gains by secondary cell RLC packets corresponding to the NACK, specifically includes：

When the macro base station judges that micro-base station HARQ number of processes currently used in the secondary cell is less than HARQ maximum number of processes, then the macro base station determines that the micro-base station carries out HARQ by secondary cell RLC packets corresponding to the NACK and results in HARQ merging gains.

With reference to the third possible implementation of first aspect or the 4th kind of possible implementation, in the 5th kind of possible implementation of first aspect, methods described also includes：

If the macro base station judges that the micro-base station carries out HARQ by secondary cell RLC packets corresponding to the NACK and can not obtain HARQ merging gains, the macro base station retransmits the corresponding RLC packets of the NACK by the main plot, in ARQ modes to the UE.

With reference to the 5th kind of possible implementation of first aspect, in the 6th kind of possible implementation of first aspect, before the macro base station receives the ACK/NACK information that the UE is sent by the main plot, methods described also includes：

The macro base station receives the RLC groups inclusion fruit that the micro-base station is sent, and the RLC groups inclusion fruit is used to show that the micro-base station is transferred to the information of the RLC packets of the UE by the secondary cell；Wherein, the micro-base station is transferred to the RLC packets of the UE by the secondary cell, is part or all of in the first quantity RLC packets；

The macro base station retransmits the corresponding RLC packets of the NACK by the main plot, in ARQ modes to the UE, specifically includes：

The macro base station retransmits the corresponding RLC packets of the NACK by the main plot, in ARQ modes according to RLC groups inclusion fruit to the UE.

With reference to the third possible implementation of first aspect or the 4th kind of possible implementation, in the 7th kind of possible implementation of first aspect, methods described also includes：

If the macro base station judges that the micro-base station carries out HARQ by secondary cell RLC packets corresponding to the NACK and can not obtain HARQ merging gains, then the NACK is sent to the micro-base station by the macro base station, and indicates that the micro-base station retransmits the corresponding RLC packets of the NACK by the secondary cell, in ARQ modes to the UE.

The second aspect of the present invention there is provided a kind of RLC packets shunt method, including：

Micro-base station sends RLC data packet request message to macro base station, wherein, the RLC data packet requests message is used for the first quantity of the RLC packets that the micro-base station asks the micro-base station to be sent by secondary cell to CAUE to the macro base station, the RLC data packet requests message is that the micro-base station is sent to the macro base station at the first moment, time difference between first moment and the second moment is T, wherein T is more than or equal to 2t, second moment be the micro-base station to the UE send the first quantity RLC packets at the time of, the t is the unidirectional transmission time delay between the micro-base station and the macro base station；

The micro-base station receives the first quantity RLC packets that the macro base station is sent, wherein, the determination process of the first quantity RLC packets includes：According to the RLC data packet requests message, the macro base station determine the macro base station in T-t durations by the second quantity from main plot to the UE RLC packets sent, at the time of the initial time of wherein described T-t durations is that the macro base station receives the RLC data packet requests message, the macro base station according to RLC packets to be sent the vertical order of sequence number, it is the second quantity RLC packets before the macro base station distribution from the RLC packets to be sent, and since first RLC packet after sequence number is located at the preceding second quantity RLC packets, the first quantity RLC packets are distributed for the micro-base station.

With reference to second aspect, in the first possible implementation of second aspect, methods described also includes：

The micro-base station receives the UE of the macro base station transmission for all or part of feedback information in the first quantity RLC packets, the UE belongs to the ACK/NACK information that the UE is sent to the macro base station for the feedback information of the first quantity RLC packets, and the ACK/NACK information also includes the feedback information that the UE is directed to the second quantity RLC packets.

With reference to the first possible implementation of second aspect, in second of possible implementation of second aspect, before the micro-base station receives feedback informations of the UE of the macro base station transmission for the first quantity RLC packets, methods described also includes：

The micro-base station sends RLC groups inclusion fruit to the macro base station, and the RLC groups inclusion fruit is used to show that the micro-base station is transferred to the information of the RLC packets of the UE by the secondary cell；Wherein, the micro-base station is transferred to the RLC packets of the UE by the secondary cell, is part or all of in the first quantity RLC packets.

The third aspect of the present invention there is provided a kind of macro base station, including：

First receiving module, RLC data packet request message for receiving micro-base station transmission, wherein, the RLC data packet requests message is used for the first quantity of the RLC packets that the micro-base station asks the micro-base station to be sent by secondary cell to CAUE to the macro base station, the RLC data packet requests message is that the micro-base station is sent to the macro base station at the first moment, time difference between first moment and the second moment is T, wherein T is more than or equal to 2t, and second moment is the micro-base station to the UE At the time of sending the first quantity RLC packets, the t is the unidirectional transmission time delay between the micro-base station and the macro base station；

Determining module, for according to the RLC data packet requests message, determine the macro base station in T-t durations by the second quantity from main plot to the UE RLC packets sent, wherein the initial time of the T-t durations is the macro base station at the time of receive the RLC data packet requests message；

Distribute module, for the vertical order of sequence number according to RLC packets to be sent, it is the second quantity RLC packets before the macro base station distribution from the RLC packets to be sent, and be that the micro-base station distributes the first quantity RLC packets since first RLC packet after sequence number is located at the preceding second quantity RLC packets；

First sending module, for the first quantity RLC packets to be sent into the micro-base station.

With reference to the third aspect, in the first possible implementation of the third aspect, the macro base station also includes the second sending module, and second sending module is used for：

The second quantity RLC packets are sent to by the UE by the main plot.

With reference to the first possible implementation of the third aspect, in second of possible implementation of the third aspect, the macro base station also includes the second receiving module, and second receiving module is used for：

The ACK/NACK information that the UE is sent is received by the main plot, the ACK/NACK information includes the feedback information that the UE is directed to the second quantity RLC packets for the feedback information and the UE of the first quantity RLC packets.

With reference to second of possible implementation of the third aspect, in the third possible implementation of the third aspect, the macro base station also includes judge module, is used for：After second receiving module receives the ACK/NACK information that the UE is sent by the main plot, if the feedback information in the ACK/NACK information for the first quantity RLC packets includes NACK, judge that the micro-base station carries out whether HARQ results in HARQ merging gains by secondary cell RLC packets corresponding to the NACK；

First sending module is additionally operable to：If resulting in HARQ merges gain, the NACK is sent to the micro-base station, and indicate that the micro-base station retransmits the RLC packets using HARQ modes to the UE.

With reference to the third possible implementation of the third aspect, in the 4th kind of possible implementation of the third aspect, the judge module specifically for：

When judging that micro-base station HARQ number of processes currently used in the secondary cell is less than HARQ maximum number of processes, it is determined that the micro-base station carries out HARQ by secondary cell RLC packets corresponding to the NACK and results in HARQ merging gains.

With reference to the third possible implementation of the third aspect or the 4th kind of possible implementation, in the 5th kind of possible implementation of the third aspect, the macro base station also includes retransmission module, is used for：

If the judge module judges that the micro-base station carries out HARQ by secondary cell RLC packets corresponding to the NACK and can not obtain HARQ merging gains, then by the main plot, through second sending module, the corresponding RLC packets of the NACK are retransmitted to the UE in ARQ modes.

With reference to the 5th kind of possible implementation of the third aspect, in the 6th kind of possible implementation of the third aspect, first receiving module is additionally operable to：

Before second receiving module receives the ACK/NACK information that the UE is sent by the main plot, the RLC groups inclusion fruit that the micro-base station is sent is received, the RLC groups inclusion fruit is used to show that the micro-base station is transferred to the information of the RLC packets of the UE by the secondary cell；Wherein, the micro-base station is transferred to the RLC packets of the UE by the secondary cell, is part or all of in the first quantity RLC packets；

The retransmission module specifically for：According to RLC groups inclusion fruit, by the main plot, through second sending module, the corresponding RLC packets of the NACK are retransmitted to the UE in ARQ modes.

With reference to the third possible implementation of the third aspect or the 4th kind of possible implementation, in the 7th kind of possible implementation of the third aspect, first sending module is additionally operable to：

If the judge module judges that the micro-base station carries out HARQ by secondary cell RLC packets corresponding to the NACK and can not obtain HARQ merging gains, the NACK is then sent to the micro-base station, and indicates that the micro-base station retransmits the corresponding RLC packets of the NACK by the secondary cell, in ARQ modes to the UE.

The fourth aspect of the present invention there is provided a kind of micro-base station, including：

First sending module, for sending RLC data packet request message to macro base station, wherein, the RLC data packet requests message is used for the first quantity of the RLC packets that the micro-base station asks the micro-base station to be sent by secondary cell to CAUE to the macro base station, the RLC data packet requests message is that the micro-base station is sent to the macro base station by first sending module at the first moment, time difference between first moment and the second moment is T, wherein T is more than or equal to 2t, second moment be the micro-base station by the second sending module to the UE send the first quantity RLC packets at the time of, the t is the unidirectional transmission time delay between the micro-base station and the macro base station；

First receiving module, for receiving the first quantity RLC packets that the macro base station is sent, wherein, the determination process of the first quantity RLC packets includes：According to the RLC data packet requests message, the macro base station determine the macro base station in T-t durations by the second quantity from main plot to the UE RLC packets sent, at the time of the initial time of wherein described T-t durations is that the macro base station receives the RLC data packet requests message, the macro base station according to RLC packets to be sent the vertical order of sequence number, it is the second quantity RLC packets before the macro base station distribution from the RLC packets to be sent, and since first RLC packet after sequence number is located at the preceding second quantity RLC packets, the first quantity RLC packets are distributed for the micro-base station.

With reference to fourth aspect, in the first possible implementation of fourth aspect, first receiving module is additionally operable to：

The UE of the macro base station transmission is received for all or part of feedback information in the first quantity RLC packets, the UE belongs to the ACK/NACK information that the UE is sent to the macro base station for the feedback information of the first quantity RLC packets, and the ACK/NACK information also includes the feedback information that the UE is directed to the second quantity RLC packets.

With reference to the first possible implementation of fourth aspect, in second of possible implementation of fourth aspect, first sending module is additionally operable to：

Before first receiving module receives feedback informations of the UE of the macro base station transmission for the first quantity RLC packets, RLC groups inclusion fruit is sent to the macro base station, the RLC groups inclusion fruit is used to show that the micro-base station is transferred to by the secondary cell, through second sending module The information of the RLC packets of the UE；Wherein, the micro-base station is transferred to the RLC packets of the UE by the secondary cell, through second sending module, is part or all of in the first quantity RLC packets.

There is provided a kind of macro base station, including memory, processor and interface for the fifth aspect of the present invention；

The memory, for store instruction；

The interface, RLC data packet request message for receiving micro-base station transmission, wherein, the RLC data packet requests message is used for the first quantity of the RLC packets that the micro-base station asks the micro-base station to be sent by secondary cell to CAUE to the macro base station, the RLC data packet requests message is that the micro-base station is sent to the macro base station at the first moment, time difference between first moment and the second moment is T, wherein T is more than or equal to 2t, second moment be the micro-base station to the UE send the first quantity RLC packets at the time of, the t is the unidirectional transmission time delay between the micro-base station and the macro base station；

The processor, calls the instruction of the memory, for performing：According to the RLC data packet requests message, determine the macro base station in T-t durations by the second quantity from main plot to the UE RLC packets sent, wherein the initial time of the T-t durations is the macro base station at the time of receive the RLC data packet requests message；And, according to the vertical order of sequence number of RLC packets to be sent, it is the second quantity RLC packets before the macro base station distribution from the RLC packets to be sent, and be that the micro-base station distributes the first quantity RLC packets since first RLC packet after sequence number is located at the preceding second quantity RLC packets；

The processor, is additionally operable to that the first quantity RLC packets are sent into the micro-base station by the interface.

With reference to the 5th aspect, in the first possible implementation of the 5th aspect, the macro base station also includes transceiver；The processor is additionally operable to：

By the main plot, through the transceiver, the second quantity RLC packets are sent to the UE.

With reference to the first possible implementation of the 5th aspect, in second of possible implementation of the 5th aspect, the transceiver is additionally operable to：

With reference to second of possible implementation of the 5th aspect, in the third possible implementation of the 5th aspect, the processor is additionally operable to：

After the transceiver receives the ACK/NACK information that the UE is sent by the main plot, if the feedback information in the ACK/NACK information for the first quantity RLC packets includes NACK, judge that the micro-base station carries out whether HARQ results in HARQ merging gains by secondary cell RLC packets corresponding to the NACK；And, if resulting in HARQ merges gain, the NACK is sent to by the micro-base station by the interface, and indicate that the micro-base station retransmits the RLC packets using HARQ modes to the UE.

With reference to the third possible implementation of the 5th aspect, in the 4th kind of possible implementation of the 5th aspect, the processor is additionally operable to judge that the micro-base station carries out whether HARQ results in HARQ merging gains by secondary cell RLC packets corresponding to the NACK, is specially：

With reference to the third possible implementation or the 4th kind of possible implementation of the 5th aspect, in the 5th kind of possible implementation of the 5th aspect, the processor is additionally operable to：

If judging, the micro-base station carries out HARQ by secondary cell RLC packets corresponding to the NACK and can not obtain HARQ merging gains, and by the main plot, through the transceiver, the corresponding RLC packets of the NACK are retransmitted to the UE in ARQ modes.

With reference to the 5th kind of possible implementation of the 5th aspect, in the 6th kind of possible implementation of the 5th aspect, the interface is additionally operable to：Before the transceiver receives the ACK/NACK information that the UE is sent by the main plot, the RLC groups inclusion fruit that the micro-base station is sent is received, the RLC groups inclusion fruit is used to show that the micro-base station is transferred to the information of the RLC packets of the UE by the secondary cell；Wherein, the micro-base station is transferred to the RLC packets of the UE by the secondary cell, To be part or all of in the first quantity RLC packets；

The processor is additionally operable to by the main plot, through the transceiver, is retransmitted the corresponding RLC packets of the NACK to the UE in ARQ modes, is specially：According to RLC groups inclusion fruit, by the main plot, through the transceiver, the corresponding RLC packets of the NACK are retransmitted to the UE in ARQ modes.

With reference to the third possible implementation or the 4th kind of possible implementation of the 5th aspect, in the 7th kind of possible implementation of the 5th aspect, the processor is additionally operable to：

If judging, the micro-base station carries out HARQ by secondary cell RLC packets corresponding to the NACK and can not obtain HARQ merging gains, the NACK is then sent to by the micro-base station by the interface, and indicates that the micro-base station retransmits the corresponding RLC packets of the NACK by the secondary cell, in ARQ modes to the UE.

There is provided a kind of micro-base station, including memory, processor, interface and transceiver for sixth aspect present invention；

The memory, for store instruction；

The processor, calls the instruction of the memory storage, for performing：RLC data packet request message is sent to macro base station by the interface, wherein, the RLC data packet requests message is used for the first quantity of the RLC packets that the micro-base station asks the micro-base station to be sent by secondary cell to CAUE to the macro base station, the RLC data packet requests message is that the processor is sent to the macro base station at the first moment by the interface, time difference between first moment and the second moment is T, wherein T is more than or equal to 2t, second moment be the processor by the transceiver to the UE send the first quantity RLC packets at the time of, the t is the unidirectional transmission time delay between the micro-base station and the macro base station；

The interface, for receiving the first quantity RLC packets that the macro base station is sent, wherein, the determination process of the first quantity RLC packets includes：According to the RLC data packet requests message, the macro base station determine the macro base station in T-t durations by the second quantity from main plot to the UE RLC packets sent, the initial time of wherein described T-t durations is macro base station at the time of receive the RLC data packet requests message, the macro base station according to RLC packets to be sent sequence number Vertical order, it is the second quantity RLC packets before the macro base station distribution from the RLC packets to be sent, and be that the micro-base station distributes the first quantity RLC packets since first RLC packet after sequence number is located at the preceding second quantity RLC packets.

With reference to the 6th aspect, in the first possible implementation of the 6th aspect, the interface is additionally operable to：

With reference to the first possible implementation of the 6th aspect, in second of possible implementation of the 6th aspect, the processor is additionally operable to：

Before feedback informations of the UE that macro base station described in the interface is sent for the first quantity RLC packets, RLC groups inclusion fruit is sent to the macro base station by the interface, the RLC groups inclusion fruit is used to show that the processor is transferred to the information of the RLC packets of the UE by the secondary cell, through the transceiver；Wherein, the processor is transferred to the RLC packets of the UE by the secondary cell, through the transceiver, is part or all of in the first quantity RLC packets.

In the embodiment of the present invention, micro-base station can to UE send RLC packets at the time of before first moment ask needed for RLC packets, so the RLC packets needed for micro-base station just can be sent to micro-base station by macro base station in advance, so as to reduce the propagation delay time between macro base station and micro-base station as far as possible, the receptivity of the UE under non-ideal passback HetNet CA scenes is improved.

In addition, in the embodiment of the present invention, macro base station receives the RLC data packet request message of micro-base station with t durations, it is then determined that macro base station can send the second quantity RLC packets in from current time to this section of duration second moment, then the second quantity RLC allocation of packets is to macro base station before just sequence number is located above, simultaneously first quantity RLC allocation of packets of the sequence number after the second quantity RLC packets is started to send the second quantity RLC packets to UE to micro-base station, and macro base station.Because macro base station sends the duration needed for the second quantity RLC packets For from current time to this section of duration second moment, just micro-base station receives and starts to send the first quantity RLC packets when so the second number of data bag is sent by macro base station, and the sequence number between these RLC packets is arranged in order, so as to ensure that the order of RLC packets is sent, it can not be decoded avoiding the UE RLC packets out of order because receiving, further increase UE receptivity.

Brief description of the drawings

Fig. 1 transmits schematic diagram for the RLC packets of AM in the prior art；

Fig. 2 is the broad flow diagram of macro base station side RLC packet shunt methods in the embodiment of the present invention；

Fig. 3 is the broad flow diagram of micro-base station side RLC packet shunt methods in the embodiment of the present invention；

Fig. 4 A are the primary structure block diagram of macro base station in the embodiment of the present invention；

Fig. 4 B are the detailed block diagram of macro base station in the embodiment of the present invention；

Fig. 5 A are the primary structure block diagram of micro-base station in the embodiment of the present invention；

Fig. 5 B are the detailed block diagram of micro-base station in the embodiment of the present invention；

Fig. 6 A are the primary structure schematic diagram of macro base station in the embodiment of the present invention；

Fig. 6 B are the detailed construction schematic diagram of macro base station in the embodiment of the present invention；

Fig. 7 is the structural representation of micro-base station in the embodiment of the present invention.

Embodiment

To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is explicitly described, it is clear that, described embodiment is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.

The techniques described herein may be used in Universal Mobile Telecommunications System (Universal Mobile Telecommunications System, UMTS), LTE system, and LTE follow-up evolution system.

First base station receives the RLC data packet request message that the second base station is sent, wherein, the RLC data packet requests message is used for second base station asks second base station by secondary cell to CA to the first base station First quantity of the RLC packets that UE is sent, the RLC data packet request message is that second base station is sent to the first base station at the first moment, time difference between first moment and the second moment is more than or equal to 2t, second moment be second base station to the UE send the first quantity RLC packets at the time of, t is unidirectional transmission time delay between second base station and the first base station；

The first base station according to the RLC data packet request message, determine the first base station by the second quantity from main plot to the UE RLC packets sent；

According to the vertical order of sequence number of RLC packets to be sent, the first base station distributes preceding second quantity RLC packets from the RLC packets to be sent for the first base station, and since first RLC packet after sequence number is located at the preceding second quantity RLC packets, the first quantity RLC packets are distributed for second base station；

The first quantity RLC packets are sent to second base station by the first base station.

Second base station sends RLC data packet request message to first base station, wherein, the RLC data packet requests message is used for the first quantity of the RLC packets that second base station asks second base station to be sent by secondary cell to CA UE to the first base station, the RLC data packet request message is that second base station is sent to the first base station at the first moment, time difference between first moment and the second moment is more than or equal to 2t, second moment be second base station to the UE send the first quantity RLC packets at the time of, the t is the unidirectional transmission time delay between second base station and the first base station；

Second base station receives the first quantity RLC packets of first base station transmission, wherein, the determination process of the first quantity RLC packets includes：According to the RLC data packet request message, the first base station determine the first base station by the second quantity from main plot to the UE RLC packets sent, the first base station according to RLC packets to be sent the vertical order of sequence number, it is the second quantity RLC packets before first base station distribution from the RLC packets to be sent, and since first RLC packet after sequence number is located at the preceding second quantity RLC packets, the first quantity RLC packets are distributed for second base station.

In the embodiment of the present invention so that receiving terminal is UE as an example.

Main plot is the cell being operated in main band.UE carries out wireless heterogeneous networks (Radio Resource Control, RRC) connection by main plot and Macro eNodeB and set up.

Secondary cell is the cell being operated on auxiliary frequency band.UE with CA abilities completes RRC with Macro eNodeB and is connected foundation, can configure secondary cell to provide extra Radio Resource for the UE.

In the embodiment of the present invention, it is described with first base station and the scene of the second base station networking.Wherein, first base station can be macro base station or micro-base station, likewise, the second base station can also be macro base station or can be micro-base station, the embodiment of the present invention is not restricted for first base station and the type of the second base station.For example, first base station and the second base station can be macro base stations, such as, first base station and the second base station can be micro-base stations, such as, first base station is that the base station of macro base station second is micro-base station, such as, first base station is that the base station of micro-base station second is macro base station, etc..Wherein, in following introduction, by first base station be exemplified by macro base station, the second base station are micro-base stations.

So, it should be noted that, for convenience of description, the embodiment of the present invention is described with the HetNet scenes of grand micro-base station networking, the macro base station described in the embodiment of the present invention, micro-base station may also be replaced with application scenes, equally, the micro-base station described in the embodiment of the present invention, may also replace with macro base station in application scenes, that is, the technical scheme in the embodiment of the present invention is applied equally to the networking scene between macro base station and between micro-base station.

In addition, the terms " system " and " network " are often used interchangeably herein.The terms "and/or", only a kind of incidence relation for describing affiliated partner, represents there may be three kinds of relations, for example, A and/or B, can be represented：Individualism A, while there is A and B, these three situations of individualism B.In addition, character "/" herein, unless otherwise specified, it is a kind of relation of "or" to typically represent forward-backward correlation object.

The embodiment of the present invention is described in further detail with reference to Figure of description.

Fig. 2 is referred to, the embodiment of the present invention provides a kind of RLC packets shunt method, and the main flow of methods described is described as follows.

Step 201：Macro base station receives the RLC data packet request message that micro-base station is sent.

Wherein, the RLC data packet requests message is used for the first quantity of the RLC packets that the micro-base station asks the micro-base station to be sent by secondary cell to CA UE to the macro base station, the RLC data packet requests message is that the micro-base station is sent to the macro base station at the first moment, time difference between first moment and the second moment is T, wherein T is more than or equal to 2t, and second moment is micro- base At the time of station to UE transmission the first quantity RLC packets, the t is the unidirectional transmission time delay between the micro-base station and the macro base station.

Optionally, unidirectional transmission time delay can be measured by the transmitting-receiving of the packet with timestamp and obtained.Other are used to obtain the method for unidirectional transmission time delay also within the protection domain of the embodiment of the present invention.

Optionally, micro-base station according to the quality of wireless channel between the micro-base station and the CA UE, the cell load of the secondary cell of the micro-base station, the CA UE any one or its of the spectrum efficiency of secondary cell combine determine the micro-base station first quantity from the second moment to the CA UE RLC packets sent.First quantity is sent to macro base station by micro-base station by the RLC data packet request message, asks the RLC packets of first quantity to the macro base station to the micro-base station.

Optionally, quality of wireless channel between the micro-base station and the CA UE, the cell load of the secondary cell of the micro-base station, the CA UE by the RLC data packet request message are sent to macro base station by micro-base station in the spectrum efficiency of secondary cell, ask the RLC packets of first quantity to the macro base station to the micro-base station.Macro base station according to the micro-base station received and the quality of wireless channel between the CAUE, the cell load of the secondary cell of the micro-base station, the CA UE any one or its of the spectrum efficiency of secondary cell combine determine the micro-base station the second moment can to the CA UE RLC packets sent the first quantity.Further, macro base station can also consider quality of wireless channel, the cell load of the main plot of the macro base station between the macro base station and the CA UE, the CA UE the spectrum efficiency of main plot any one or its combination, to determine the micro-base station the second moment can to the CA UE RLC packets sent the first quantity.

Wherein, quality of wireless channel can indicate (Channel Quality Indicator for channel quality, CQI), Signal Interference and Noise Ratio (Signal to Interference plus Noise Ratio,) or Reference Signal Received Power (Reference Signal Received Power SINR, RSRP), Reference Signal Received Quality (Reference Signal Received Quality, RSRQ).

Others determine the parameter of the quantity to UE transmission RLC packets for base station, for example：Scheduling delay, scheduling data package size etc. are also within the protection domain of the embodiment of the present invention.

In the embodiment of the present invention, the UE with CA abilities is referred to as CA UE.

Optionally, before step 201, in addition to：

UE with CA abilities, makes it preferentially be resident on macro base station, i.e. make it will be small in macro base station Area is used as its main plot.

After making UE preferentially be resident macro base station, when service bearer is initiated in base stations (i.e. the macro base station) of the UE into the main plot to be set up, the RLC data service logic channels for the AM that macro base station is set up between macro base station and UE, and the AM set up between micro-base station and UE RLC data service logic channels.Wherein, the cell in micro-base station is UE secondary cell.

Specifically, UE of the order with CA abilities is preferentially resident macro base station, and macro base station sets up RLC data service logic channels respectively, is all process of the prior art, and specific implementation refers to prior art, the invention is not limited in this regard.

In the embodiment of the present invention, micro-base station knows when to start to send RLC packets to UE, so, first moment before starting to send from RLC packets to UE, micro-base station can send the RLC data packet requests message to macro base station first, and the RLC data packet requests message is used to ask macro base station to send RLC packets to micro-base station.The quantity of the RLC packets needed for micro-base station is referred to as first quantity in the embodiment of the present invention.

In the embodiment of the present invention, the time difference T between first moment and second moment is more than or equal to 2t.Preferably, the time difference T between first moment and second moment is equal to 2t.

Step 202：The macro base station according to the RLC data packet requests message, determine the macro base station in T-t durations by the second quantity from main plot to the UE RLC packets sent.

The macro base station is received after the RLC data packet request message, determine the macro base station in T-t durations by the second quantity from main plot to the CA UE RLC packets sent, at the time of the initial times of the T-t durations receives the RLC data packet request message for the macro base station.

Macro base station combines the RLC packets for determining that the macro base station can be transmitted in above-mentioned duration according to the radio signal quality between the macro base station and the CA UE, the cell load of the main plot of the macro base station, the CA UE in any one or its of the spectrum efficiency of main plot, that is, determine the macro base station by the second quantity from main plot to the CA UE RLC packets sent.

If the time difference between first moment and second moment is equal to 2t, then time difference at the time of macro base station receives the RLC data packet requests message between second moment is t.

Macro base station is received after the RLC data packet requests message, it is determined that from current time to described second In this section of duration between moment, macro base station can transmit how many RLC packets, and need to consume how many sequence number (Serial Number, SN the quantity for the RLC packets that can be transmitted in this section of duration of macro base station is referred to as second quantity in) resource, such as embodiment of the present invention.Wherein, each RLC packets can have sequence number, no matter macro base station or micro-base station, be all that RLC packets are sequentially sent according to the sequence number of RLC packets.So, the resource consumed by each RLC packets addition sequence number is exactly SN resources.

For example, if the time difference between first moment and second moment is equal to 2t, so macro base station is accomplished by determining the quantity for the RLC packets that macro base station can be transmitted and the SN resources consumed in following t durations, that is, described second quantity is exactly the quantity of the RLC packets that macro base station can be transmitted in following t durations.Following t durations mentioned here, at the time of its initial time is that macro base station receives the RLC data packet requests message.

Step 203：According to the vertical order of sequence number of RLC packets to be sent, the macro base station is the second quantity RLC packets before the macro base station distribution from the RLC packets to be sent, and be that the micro-base station distributes the first quantity RLC packets since first RLC packet after sequence number is located at the preceding second quantity RLC packets.

For example, macro base station determines that second quantity is 50, i.e. macro base station from the current time to can send 50 RLC packets second moment, and determine that the quantity of the RLC packets needed for micro-base station is 30.So macro base station is just according to the vertical order of sequence number of RLC packets to be sent, since first RLC packet to be sent, preceding 50 RLC packets are distributed for macro base station, and 30 RLC allocation of packets of beginning will be unwrapped from the 51st data to micro-base station.

Step 204：The first quantity RLC packets are sent to the micro-base station by the macro base station.

That is, macro base station is distributed after the first quantity RLC packets for micro-base station, the first quantity RLC packets can be sent into micro-base station.Micro-base station is when receiving the first quantity RLC packets, if second moment has arrived, micro-base station can directly start the sequence number according to RLC packets, sequentially sends the first quantity RLC packets to UE.

If preferably, the time difference between first moment and second moment is equal to 2t, then may be just just second moment at the time of micro-base station receives the first quantity RLC packets, Then micro-base station can be sent once receiving RLC packets at once, is reduced the step of micro-base station needs temporarily storage RLC packets, is saved storage resource.

Optionally, in the embodiment of the present invention, methods described also includes：

That is, after the second quantity RLC packets of macro base station distribution are defined as, the second quantity RLC packets directly can be sent to UE by macro base station.

For example, the time difference between first moment and second moment is equal to 2t.Macro base station determines that second quantity is 50, i.e. macro base station from the current time to can send 50 RLC packets second moment, and determines that the quantity of the RLC packets needed for micro-base station is 30.So macro base station is just according to the vertical order of sequence number of RLC packets to be sent, since first RLC packet to be sent, preceding 50 RLC packets are distributed for macro base station, and 30 RLC allocation of packets of beginning will be unwrapped from the 51st data to micro-base station, and, macro base station will unwrap 30 RLC packets of beginning from the 51st data and be sent to micro-base station.

Distributed for macro base station after preceding 50 RLC packets, macro base station sequentially can send preceding 50 RLC packets directly according to the sequence number of RCL packets to UE.When macro base station is sent to the 50th RLC packet, 30 RLC packets after micro-base station is just received, and second moment has also just arrived, then micro-base station is also according to the sequence number of RCL packets, and beginning order sends the 51st RLC packet to UE.So, UE is that order is received when receiving RLC packets, it is to avoid because of the decoding for occurring having influence on UE receiving out of order situation, improve UE receptivity.And postpone smaller in transmission process, improve transmitting efficiency.

In the embodiment of the present invention, macro base station receives the RLC data packet request message of micro-base station with t durations, it is then determined that macro base station can send the second quantity RLC packets in from current time to this section of duration second moment, then the second quantity RLC allocation of packets is to macro base station before just sequence number is located above, simultaneously first quantity RLC allocation of packets of the sequence number after the second quantity RLC packets is started to send the second quantity RLC packets to UE to micro-base station, and macro base station.Because macro base station send needed for the second quantity RLC packets when it is a length of from it is current when It is carved into this section of duration between second moment, just micro-base station receives and starts to send the first quantity RLC packets when so the second number of data bag is sent by macro base station, and the sequence number between these RLC packets is arranged in order, so as to ensure that the order of RLC packets is sent, it can not be decoded avoiding the UE RLC packets out of order because receiving, further increase UE receptivity.

In the embodiment of the present invention, so that receiving terminal is UE as an example, then, either macro base station or micro-base station, UE is sent to by RLC packets, can be sent to RLC packets and be eated dishes without rice or wine, and UE is received by eating dishes without rice or wine.

UE is after RLC packets are received, according to the correctness of the RLC packets received, be to macro base station feedback acknowledgment response (Acknowledgement, ACK)/negative response (Negative ACKnowledge, NACK) information.

Optionally, in the embodiment of the present invention, before the macro base station receives the ACK/NACK information that the UE is sent by the main plot, methods described also includes：

The macro base station receives the RLC groups inclusion fruit that the micro-base station is sent, and the RLC groups inclusion fruit is used to show that the micro-base station is transferred to the information of the RLC packets of the UE by the secondary cell；Wherein, the micro-base station is transferred to the RLC packets of the UE by the secondary cell, is part or all of in the first quantity RLC packets.

Its whole may be transferred to UE by the first quantity RLC packets that macro base station is distributed to micro-base station, micro-base station, but be also possible to only transmit a part to UE.For example, macro base station is divided into 3 RLC packets of dispensing micro-base station, for example it is respectively 1,2 and 3, then this 3 RLC packets may be all transferred to UE by micro-base station, then the RLC groups inclusion fruit is just used for the information for showing this 3 RLC packets, or therein 1 and 2 only may be transferred to UE by micro-base station, then RLC groups inclusion fruit is just used for the information for showing 1 and 2 two RLC packet, or micro-base station may will wherein 1 and 2 in a part of data be transferred to UE, then RLC groups inclusion fruit is just used for the information for showing the part data for being transferred to UE in 1 and 2.

I.e., although macro base station is known to which RLC packet is micro-base station be assigned with, but which fractional transmission therein has specifically been given UE, it is necessary to which micro-base station tells macro base station by RLC groups inclusion fruit by micro-base station.

For example, the RLC packets of distribution can be sent to receiving terminal (if receiving terminal is UE by micro-base station, then be sent to and eat dishes without rice or wine) when by the RLC groups inclusion fruit be sent to macro base station, so, macro base station it is known which RLC data has been transferred to UE by micro-base station actually.

Optionally, in the embodiment of the present invention, after the macro base station receives the ACK/NACK information that the UE is sent by the main plot, methods described also includes：

If the feedback information for the first quantity RLC packets that the macro base station is received includes NACK, then the macro base station judges that the micro-base station carries out whether hybrid automatic repeat-request (Hybrid Automatic Repeat reQuest, HARQ) results in HARQ merging gains by secondary cell RLC packets corresponding to the NACK；

If macro base station confirms that the feedback information of the RLC packets transmitted for micro-base station received is NACK, then macro base station confirms that the corresponding RLC packets of the NACK need re-transmission.

If macro base station determines that the corresponding RLC packets of the NACK need re-transmission, then macro base station can first determine whether that micro-base station carries out whether HARQ results in HARQ merging gains to the RLC packets by secondary cell.For example, micro-base station is transferred to tri- RLC packets of UE altogether, respectively RLC packets 1, RLC packets 2 and RLC packets 3, then UE the feedback information for these three RLC packets is sent to macro base station.For example for wherein RLC packets 2, the feedback information that UE is sent is NACK, then macro base station can judge that micro-base station carries out whether HARQ results in HARQ merging gains to RLC packets 2 by secondary cell, if macro base station determines that micro-base station carries out HARQ to RLC packets 2 by secondary cell and results in HARQ merging gains, so the corresponding NACK of RLC packets 2 will be sent to micro-base station by macro base station, and indicate that micro-base station retransmits RLC packets 2 by HARQ modes.

Certainly, if in the feedback information for the first quantity RLC packets that macro base station is received Including ACK, then these ACK are directly sent to micro-base station by macro base station.For example, for wherein RLC packets 1 and RLC packets 3, the feedback information that UE is sent is ACK, then the corresponding ACK of the corresponding ACK and RLC packets 3 of RLC packets 1 is sent to micro-base station by macro base station.

Optionally, in the embodiment of the present invention, the macro base station judges that the micro-base station carries out whether HARQ results in HARQ merging gains by secondary cell RLC packets corresponding to the NACK, specifically includes：

If micro-base station HARQ number of processes currently used in secondary cell is less than the maximum number of processes of HARQ, illustrate also available free HARQ processes, then the NACK can be sent to micro-base station by macro base station, and indicate that micro-base station retransmits the corresponding RLC packets of the NACK using HARQ modes.Micro-base station receive the NACK of macro base station transmission and for indicating that micro-base station retransmits the instruction of the corresponding RLC packets of the NACK using HARQ modes after, by secondary cell HARQ modes can be used to the UE to retransmit the corresponding RLC packets of the NACK.Micro-base station directly can retransmit the corresponding RLC packets of the NACK using idle HARQ processes, and retransmission delay time is smaller, and UE handling capacity is not interfered with substantially, and UE can normally obtain HARQ and merge gain.

And if micro-base station HARQ number of processes currently used in secondary cell is not less than the maximum number of processes of HARQ, then micro-base station needs that the corresponding RLC packets of the NACK could be retransmitted to the UE until available free HARQ processes, so cause retransmission delay time larger, in this case, if micro-base station continues to retransmit the corresponding RLC packets of the NACK with HARQ modes by secondary cell, UE can not obtain HARQ merge gain, therefore in this way come judge micro-base station by secondary cell to RLC packets carry out HARQ whether result in HARQ merge gain.

In the embodiment of the present invention, if macro base station judges to determine that micro-base station carries out HARQ by secondary cell RLC packets corresponding to the NACK and can not obtain HARQ merging gains, then macro base station has two kinds of processing modes：

First way：Macro base station oneself is passed through the corresponding RLC packets of the NACK by main plot HARQ (Automatic Repeat reQuest, ARQ) mode is retransmitted to the UE.

The second way：Macro base station indicates that micro-base station is retransmitted the corresponding RLC packets of the NACK by ARQ modes by secondary cell to the UE.

Introduce individually below.

First way：

Optionally, in the embodiment of the present invention, judge that the micro-base station carries out whether HARQ is resulted in after HARQ merges gain by corresponding to the NACK RLC packets of the secondary cell in macro base station, methods described can also include：

Optionally, in the embodiment of the present invention, the macro base station retransmits the corresponding RLC packets of the NACK by the main plot, in ARQ modes to the UE, specifically includes：

That is, if macro base station judges to determine that micro-base station carries out HARQ by corresponding to the NACK RLC packets of the secondary cell and can not obtain HARQ to merge gain, then a kind of mode that macro base station can be used is：The corresponding RLC packets of the NACK are voluntarily retransmitted to the UE by ARQ modes.

Because before step 201, macro base station has been obtained for the RLC groups inclusion fruit, it is known which RLC packet has specifically been transferred to UE by micro-base station, therefore macro base station can transmit the corresponding RLC packets of the NACK by ARQ modes with directly to the UE.

And in the prior art, even if macro base station will retransmit RLC packets, it is also required to the SN state reports for first waiting UE to feed back, just know which RLC packet has been transferred to UE by micro-base station actually after SN state reports are received, then macro base station could retransmit part or all of RLC packets therein, it is seen then that the technical scheme in the embodiment of the present invention is for prior art, the RLC service interaction time is shortened, efficiency of transmission is improved.

The second way：

Optionally, in the embodiment of the present invention, methods described can also include：

If macro base station judges to determine that micro-base station carries out HARQ by corresponding to the NACK RLC packets of secondary cell and can not obtain HARQ to merge gain, then the another way that macro base station can be used is：The NACK is sent to micro-base station, and indicates that micro-base station retransmits the corresponding RLC packets of the NACK by secondary cell, in ARQ modes to the UE.Micro-base station receive macro base station transmission NACK and for indicate micro-base station by secondary cell, the instruction of the corresponding RLC packets of the NACK is retransmitted in ARQ modes after, the corresponding RLC packets of the NACK can be retransmitted by secondary cell, using ARQ modes to the UE.

For example in frequency division multiplexing (Frequency Division Duplexing, FDD) in system, HARQ processes (ID) number that it is stipulated in the agreement that is 8 (maximum available HARQ ID quantity of eating dishes without rice or wine), but due to HARQ round-trip delay (Round-Trip Time, RTT presence), actual HARQ RTT is 8+N (N refers to one way link time delay between station), under extreme scenes, and HARQ ID quantity available can be caused not enough.In the prior art, when 8 HARQ ID in secondary cell are used and no HARQ ID are released, if now micro-base station also new RLC packets need to retransmit, temporarily without retransmitting, and retransmitted again when having waited HARQ ID idle.That is, because HARQ ID are not enough, part-time can not send RLC packets, UE handling capacity is lost, in general, and it is N/ (8+N) * 100% that the throughput of UE losses, which bears gain,.

In addition, in the prior art, if 8 HARQ ID are used and are not released, if now also new RLC packets need transmission, HARQ multiplex modes can also be used, that is, take the HARQ ID that have used, and the set HARQ ID RLC packets be new biography RLC packets.The RLC packets of occupied HARQ ID last times transmission can so be caused when needing to carry out HARQ re-transmissions, also receiving terminal can only be sent to according to the RLC packets of new biography, RLC processing data packets that can not again as re-transmission, cause receiving terminal can not obtain HARQ and merge gain.

And use after the method in the embodiment of the present invention, macro base station first determines whether whether micro-base station HARQ ID quantity currently used in secondary cell is less than HARQ ID maximum quantity (i.e. described HARQ maximums number of processes), if being less than, then determine that also available free HARQ ID are available for retransmitting RLC packets, then RLC packets to be retransmitted can be transmitted in time, i.e., receiving terminal results in HARQ merging gains.If and micro-base station HARQ ID quantity currently used in secondary cell is not less than HARQ ID maximum quantity, in general it is the maximum quantity that micro-base station HARQ ID quantity currently used in secondary cell is equal to HARQ ID, illustrate to be used to retransmit new RLC packets without idle HARQ ID, so new RLC packets cannot may be transmitted in time, HARQ modes can be then abandoned in the embodiment of the present invention, and use ARQ modes instead and retransmit the new RLC packets, RLC packets are made to be retransmitted as early as possible as far as possible, reduce the time delay needed for data packet retransmission, improve the efficiency of data packet retransmission.

Fig. 3 is referred to, based on same inventive concept, the embodiment of the present invention provides another RLC packets shunt method, and the main flow of methods described is described as follows.

Step 301：Micro-base station sends RLC data packet request message to macro base station.

Wherein, the RLC data packet requests message is used for the first quantity of the RLC packets that the micro-base station asks the micro-base station to be sent by secondary cell to CA UE to the macro base station, the RLC data packet requests message is that the micro-base station is sent to the macro base station at the first moment, time difference between first moment and the second moment is T, wherein T is more than or equal to 2t, second moment be the micro-base station to the UE send the first quantity RLC packets at the time of, the t is unidirectional transmission time delay between the micro-base station and the macro base station.

Step 302：The micro-base station receives the first quantity RLC packets that the macro base station is sent.

Wherein, the determination process of the first quantity RLC packets includes：According to the RLC data packet requests message, the macro base station determine the macro base station in T-t durations by the second quantity from main plot to the UE RLC packets sent, wherein the initial time of the T-t durations be the macro base station At the time of receiving the RLC data packet requests message, the macro base station according to RLC packets to be sent the vertical order of sequence number, it is the second quantity RLC packets before the macro base station distribution from the RLC packets to be sent, and be that the micro-base station distributes the first quantity RLC packets since first RLC packet after sequence number is located at the preceding second quantity RLC packets.

Optionally, in the embodiment of the present invention, after micro-base station receives the first quantity RLC packets that the macro base station is sent, in addition to：

The first quantity RLC packets are sent to UE by micro-base station.

Optionally, in the embodiment of the present invention, the first quantity RLC packets are sent to after UE in micro-base station, methods described can also include：

I.e., feedback information for the first quantity RLC packets is sent to macro base station by UE, macro base station is after the feedback information for the first quantity RLC packets is received, if wherein there is ACK, then ACK therein is directly sent to micro-base station by macro base station, if wherein there is NACK, then macro base station can judge that micro-base station carries out whether HARQ results in HARQ merging gains by secondary cell RLC packets corresponding to NACK, if resulting in, then NACK is sent to micro-base station by macro base station, and indicate that micro-base station RLC packets corresponding to NACK carry out HARQ, micro-base station is after the instruction of NACK and macro base station is received, secondary cell can be passed through, the corresponding RLC packets of the NACK are retransmitted to the UE in HARQ modes.And, if macro base station judges to determine that micro-base station carries out HARQ by secondary cell RLC packets corresponding to NACK and can not obtain HARQ merging gains, macro base station has two kinds of processing modes：One kind is, NACK is still sent to micro-base station by macro base station, and indicate that micro-base station RLC packets corresponding to the NACK carry out ARQ to the UE, so micro-base station can retransmit the corresponding RLC packets of the NACK by secondary cell, in ARQ modes after the instruction of NACK and macro base station is received to the UE.Another to be, macro base station is voluntarily by main plot, in ARQ modes to the UE Retransmit the corresponding RLC packets of the NACK, then in this case, NACK may would not be sent to micro-base station by macro base station.

Optionally, in the embodiment of the present invention, before the micro-base station receives feedback informations of the UE of the macro base station transmission for the first quantity RLC packets, methods described also includes：

If macro base station judges to determine that micro-base station carries out HARQ by secondary cell RLC packets corresponding to NACK and can not obtain HARQ merging gains, and macro base station voluntarily retransmits the corresponding RLC packets of the NACK by main plot, in ARQ modes to the UE, because macro base station has been obtained for the RLC groups inclusion fruit, know which RLC packet has specifically been transferred to UE, therefore macro base station can transmit the corresponding RLC packets of the NACK by ARQ modes with directly to the UE by micro-base station.

Correlative detail in Fig. 3 embodiments realizes part, every not have what is introduced in Fig. 3 embodiments, is all had been introduced in Fig. 2 embodiments, for details, reference can be made to Fig. 2 embodiments, seldom repeat herein.

Fig. 4 A are referred to, based on same inventive concept, the embodiment of the present invention provides a kind of macro base station, and the macro base station can include the first receiving module 401, determining module 402, the sending module 404 of distribute module 403 and first.

First receiving module 401, RLC data packet request message for receiving micro-base station transmission, wherein, the RLC data packet requests message is used for the first quantity that the micro-base station asks the micro-base station to pass through the secondary cell CA UE RLC packets sent to the macro base station, the RLC data packet requests message is that the micro-base station is sent to the macro base station at the first moment, between first moment and the second moment Time difference be T, wherein T is more than or equal to 2t, second moment be the micro-base station to the UE send the first quantity RLC packets at the time of, the t is unidirectional transmission time delay between the micro-base station and the macro base station；

Determining module 402, for according to the RLC data packet requests message, determine the macro base station by the second quantity from main plot to the UE RLC packets sent；

After the first receiving module 401 receives the RLC data packet request message, determining module 402 determine the macro base station in T-t durations by the second quantity from main plot to the CA UE RLC packets sent, at the time of the initial times of the T-t durations is that the macro base station receives the RLC data packet request message；

Distribute module 403, for the vertical order of sequence number according to RLC packets to be sent, it is the second quantity RLC packets before the macro base station distribution from the RLC packets to be sent, and be that the micro-base station distributes the first quantity RLC packets since first RLC packet after sequence number is located at the preceding second quantity RLC packets；

First sending module 404, for the first quantity RLC packets to be sent into the micro-base station.

Optionally, refer in Fig. 4 B, the embodiment of the present invention, the macro base station also includes the second sending module 405, the second sending module 405 is used for：

The second quantity RLC packets are sent to by the UE by the main plot.

Optionally, continuing with referring to Fig. 4 B, in the embodiment of the present invention, the macro base station also includes the second receiving module 406, and the second receiving module 406 is used for：

Optionally, continuing with referring to Fig. 4 B, in the embodiment of the present invention,

The macro base station also includes judge module 407, and judge module 407 is used for：After the second receiving module 406 receives the ACK/NACK information that the UE is sent by the main plot, if the feedback information in the ACK/NACK information for the first quantity RLC packets includes NACK, judge that the micro-base station carries out HARQ by secondary cell RLC packets corresponding to the NACK Whether result in HARQ and merge gain；

First sending module 404 is additionally operable to：If resulting in HARQ merges gain, the NACK is sent to the micro-base station, and indicate that the micro-base station retransmits the RLC packets using HARQ modes to the UE.

Optionally, in the embodiment of the present invention, judge module 407 specifically for：

Optionally, continuing with referring to Fig. 4 B, in the embodiment of the present invention, the macro base station also includes retransmission module 408, and retransmission module 408 is used for：

If judge module 407 judges that the micro-base station carries out HARQ by secondary cell RLC packets corresponding to the NACK and can not obtain HARQ merging gains, then by the main plot, through the second sending module 405, the corresponding RLC packets of the NACK are retransmitted to the UE in ARQ modes.

Optionally, in the embodiment of the present invention,

First receiving module 401 is additionally operable to：

Before the second receiving module 406 receives the ACK/NACK information that the UE is sent by the main plot, the RLC groups inclusion fruit that the micro-base station is sent is received, the RLC groups inclusion fruit is used to show that the micro-base station is transferred to the information of the RLC packets of the UE by the secondary cell；Wherein, the micro-base station is transferred to the RLC packets of the UE by the secondary cell, is part or all of in the first quantity RLC packets；

Retransmission module 408 specifically for：According to RLC groups inclusion fruit, by the main plot, through the second sending module 405, the corresponding RLC packets of the NACK are retransmitted to the UE in ARQ modes.

Optionally, in the embodiment of the present invention, the first sending module 404 is additionally operable to：

If judge module 407 judges that the micro-base station carries out HARQ by secondary cell RLC packets corresponding to the NACK and can not obtain HARQ merging gains, the NACK is sent to The micro-base station, and indicate that the micro-base station retransmits the corresponding RLC packets of the NACK by the secondary cell, in ARQ modes to the UE.

Fig. 5 A are referred to, based on same inventive concept, the embodiment of the present invention provides a kind of micro-base station, and the micro-base station can include the first sending module 501 and the first receiving module 502.

First sending module 501, for sending RLC data packet request message to macro base station, wherein, the RLC data packet requests message is used for the first quantity of the RLC packets that the micro-base station asks the micro-base station to be sent by secondary cell to CA UE to the macro base station, the RLC data packet requests message is that the micro-base station is sent to the macro base station by first sending module at the first moment, time difference between first moment and the second moment is T, wherein T is more than or equal to 2t, second moment is that the micro-base station (refers to Fig. 5 B by the second sending module 503, the micro-base station also include the second sending module 503) to the UE send the first quantity RLC packets at the time of, the t is the unidirectional transmission time delay between the micro-base station and the macro base station；

First receiving module 502, for receiving the first quantity RLC packets that the macro base station is sent, wherein, the determination process of the first quantity RLC packets includes：According to the RLC data packet requests message, the macro base station determine the macro base station in T-t durations by the second quantity from main plot to the UE RLC packets sent, at the time of the initial time of wherein described T-t durations is that the macro base station receives the RLC data packet requests message, the macro base station according to RLC packets to be sent the vertical order of sequence number, it is the second quantity RLC packets before the macro base station distribution from the RLC packets to be sent, and since first RLC packet after sequence number is located at the preceding second quantity RLC packets, the first quantity RLC packets are distributed for the micro-base station.

Optionally, in the embodiment of the present invention, the first receiving module 502 is additionally operable to：

Optionally, in the embodiment of the present invention, the first sending module 501 is additionally operable to：

Before the first receiving module 502 receives feedback informations of the UE of the macro base station transmission for the first quantity RLC packets, RLC groups inclusion fruit is sent to the macro base station, the RLC groups inclusion fruit is used to show that the micro-base station is transferred to the information of the RLC packets of the UE by the secondary cell, through the second sending module 503；Wherein, the micro-base station is transferred to the RLC packets of the UE by the secondary cell, through the second sending module 503, is part or all of in the first quantity RLC packets.

Optionally, in the embodiment of the present invention, the second sending module 503 is additionally operable to：The first quantity RLC packets are sent to UE.

Optionally, in the embodiment of the present invention, the second sending module 503 is additionally operable to, and according to the instruction of the macro base station, by the secondary cell, the corresponding RLC packets of NACK are retransmitted to the UE in HARQ or ARQ modes.

Fig. 6 A are referred to, based on same inventive concept, the embodiment of the present invention provides a kind of macro base station, and the macro base station can include the memory 601, processor 602 and interface 603 for being connected to bus 600.

Memory 601, the instruction of required by task is performed for storing processor 602；

Interface 603, RLC data packet request message for receiving micro-base station transmission, wherein, the RLC data packet requests message is used for the first quantity of the RLC packets that the micro-base station asks the micro-base station to be sent by secondary cell to CA UE to the macro base station, the RLC data packet requests message is that the micro-base station is sent to the macro base station at the first moment, time difference between first moment and the second moment is T, wherein T is more than or equal to 2t, second moment be the micro-base station to the UE send the first quantity RLC packets at the time of, the t is the unidirectional transmission time delay between the micro-base station and the macro base station；

Processor 602, the instruction for calling memory 601 to store, for performing：According to the RLC data packet requests message, determine the macro base station by the second quantity from main plot to the UE RLC packets sent；And, according to the vertical order of sequence number of RLC packets to be sent, it is the second quantity RLC packets before the macro base station distribution from the RLC packets to be sent, and be that the micro-base station distributes the first quantity RLC packets since first RLC packet after sequence number is located at the preceding second quantity RLC packets；

Specifically, processor 602, for performing：After the RLC data packet request message is received by interface 603, determine the macro base station in T-t durations by main plot to the second quantity of the CA UE RLC packets sent, the initial times of the T-t durations is at the time of receiving the RLC data packet request message；

Processor 602, is additionally operable to that the first quantity RLC packets are sent into the micro-base station by interface 603.

Optionally, refer in Fig. 6 B, the embodiment of the present invention, the macro base station also includes the transceiver 604 for being connected to bus 600；Processor 602 is additionally operable to：By the main plot, through transceiver 604, the second quantity RLC packets are sent to the UE.

Optionally, in the embodiment of the present invention, transceiver 604 is additionally operable to：The ACK/NACK information that the UE is sent is received by the main plot, the ACK/NACK information includes the feedback information that the UE is directed to the second quantity RLC packets for the feedback information and the UE of the first quantity RLC packets.

Optionally, in the embodiment of the present invention, processor 602 is additionally operable to：

After transceiver 604 receives the ACK/NACK information that the UE is sent by the main plot, if the feedback information in the ACK/NACK information for the first quantity RLC packets includes NACK, judge that the micro-base station carries out whether HARQ results in HARQ merging gains by secondary cell RLC packets corresponding to the NACK；And, if resulting in HARQ merges gain, the NACK is sent to by the micro-base station by interface 603, and indicate that the micro-base station retransmits the RLC packets using HARQ modes to the UE.

Optionally, in the embodiment of the present invention, processor 602 is additionally operable to judge that the micro-base station carries out whether HARQ results in HARQ merging gains by secondary cell RLC packets corresponding to the NACK, is specially：

If judging, the micro-base station carries out HARQ by secondary cell RLC packets corresponding to the NACK and can not obtain HARQ merging gains, and by the main plot, through transceiver 604, the corresponding RLC packets of the NACK are retransmitted to the UE in ARQ modes.

Optionally, in the embodiment of the present invention,

Interface 603 is additionally operable to：Before transceiver 604 receives the ACK/NACK information that the UE is sent by the main plot, the RLC groups inclusion fruit that the micro-base station is sent is received, the RLC groups inclusion fruit is used to show that the micro-base station is transferred to the information of the RLC packets of the UE by the secondary cell；Wherein, the micro-base station is transferred to the RLC packets of the UE by the secondary cell, is part or all of in the first quantity RLC packets；

Processor 602 was additionally operable to the main plot, through transceiver 604, retransmits the corresponding RLC packets of the NACK to the UE in ARQ modes, is specially：According to RLC groups inclusion fruit, by the main plot, through transceiver 604, the corresponding RLC packets of the NACK are retransmitted to the UE in ARQ modes.

If judging, the micro-base station carries out HARQ by secondary cell RLC packets corresponding to the NACK and can not obtain HARQ merging gains, the NACK is then sent to by the micro-base station by interface 603, and indicates that the micro-base station retransmits the corresponding RLC packets of the NACK by the secondary cell, in ARQ modes to the UE.

Fig. 7 is referred to, based on same inventive concept, the embodiment of the present invention provides a kind of micro-base station, and the micro-base station can include memory 701, processor 702, interface 703 and the transceiver 704 for being connected to bus 700.

Memory 701, the instruction of required by task is performed for storing processor 702；

Processor 702, the instruction for calling memory 701 to store, for performing：RLC data packet request message is sent to macro base station by interface 703, wherein, the RLC data packet requests message is used for the first quantity of the RLC packets that the micro-base station asks the micro-base station to be sent by secondary cell to CA UE to the macro base station, the RLC data packet requests message is that processor 702 is sent to the macro base station at the first moment by interface 703, time difference between first moment and the second moment is T, wherein T is more than or equal to 2t, second moment be processor 702 by transceiver 704 to the UE send the first quantity RLC packets at the time of, the t is unidirectional transmission time delay between the micro-base station and the macro base station；

Interface 703, for receiving the first quantity RLC packets that the macro base station is sent, wherein, the determination process of the first quantity RLC packets includes：According to the RLC data packet requests message, the macro base station determine the macro base station in T-t durations by the second quantity from main plot to the UE RLC packets sent, at the time of the initial time of wherein described T-t durations is that the macro base station receives the RLC data packet requests message, the macro base station according to RLC packets to be sent the vertical order of sequence number, it is the second quantity RLC packets before the macro base station distribution from the RLC packets to be sent, and since first RLC packet after sequence number is located at the preceding second quantity RLC packets, the first quantity RLC packets are distributed for the micro-base station.

Optionally, in the embodiment of the present invention, interface 703 is additionally operable to：The UE of the macro base station transmission is received for all or part of feedback information in the first quantity RLC packets, the UE belongs to the ACK/NACK information that the UE is sent to the macro base station for the feedback information of the first quantity RLC packets, and the ACK/NACK information also includes the feedback information that the UE is directed to the second quantity RLC packets.

Optionally, in the embodiment of the present invention, processor 702 is additionally operable to：

Before interface 703 receives feedback informations of the UE of the macro base station transmission for the first quantity RLC packets, RLC groups inclusion fruit is sent to the macro base station by interface 703, the RLC groups inclusion fruit is used to show that processor 702 is transferred to the information of the RLC packets of the UE by the secondary cell, through transceiver 704；Wherein, processor 702 is transferred to the RLC packets of the UE by the secondary cell, through transceiver 704, is part or all of in the first quantity RLC packets.

Optionally, in the embodiment of the present invention, processor 702 is additionally operable to：The first quantity RLC packets are sent to by UE by transceiver 704.

Optionally, in the embodiment of the present invention, processor 702 is additionally operable to, according to the instruction of the macro base station, and by the secondary cell, through transceiver 704, NACK is retransmitted to the UE in HARQ or ARQ modes Corresponding RLC packets.

In addition, in the embodiment of the present invention, macro base station receives the RLC data packet request message of micro-base station with t durations, it is then determined that macro base station can send the second quantity RLC packets in from current time to this section of duration second moment, then the second quantity RLC allocation of packets is to macro base station before just sequence number is located above, simultaneously first quantity RLC allocation of packets of the sequence number after the second quantity RLC packets is started to send the second quantity RLC packets to UE to micro-base station, and macro base station.Because macro base station send needed for the second quantity RLC packets when it is a length of from current time to this section of duration second moment, just micro-base station receives and starts to send the first quantity RLC packets when so the second number of data bag is sent by macro base station, and the sequence number between these RLC packets is arranged in order, so as to ensure that the order of RLC packets is sent, it can not be decoded avoiding the UE RLC packets out of order because receiving, further increase UE receptivity.

It is apparent to those skilled in the art that, for convenience and simplicity of description, only it is illustrated with the division of above-mentioned each functional unit, in practical application, it can as needed and by above-mentioned functions distribute and be completed by different functional units, the internal structure of device is divided into different functional units, to complete all or part of function described above.The specific work process of the system, apparatus, and unit of foregoing description, may be referred to the corresponding process in preceding method embodiment, will not be repeated here.

Technical scheme in the embodiment of the present invention is applied equally to the networking scene between the networking scene between first base station and the second base station, the i.e. embodiment of the present invention and base station form is not limited.

In several embodiments provided herein, it should be understood that disclosed system, apparatus and method can be realized by another way.For example, device embodiment described above is only schematical, such as, the division of the unit or unit, it is only a kind of division of logic function, there can be other dividing mode when actually realizing, such as multiple units or component can be combined or are desirably integrated into Another system, or some features can be ignored, or not perform.Another, it, by some interfaces, the INDIRECT COUPLING or communication connection of device or unit, can be electrical, machinery or other forms that shown or discussed coupling or direct-coupling or communication connection each other, which can be,.

The unit illustrated as separating component can be or may not be physically separate, and the part shown as unit can be or may not be physical location, you can with positioned at a place, or can also be distributed on multiple NEs.Some or all of unit therein can be selected to realize the purpose of this embodiment scheme according to the actual needs.

In addition, each functional unit in the application each embodiment can be integrated in a processing unit or unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated unit can both be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.

If the integrated unit is realized using in the form of SFU software functional unit and as independent production marketing or in use, can be stored in a computer read/write memory medium.Understood based on such, the part or all or part of the technical scheme that the technical scheme of the application substantially contributes to prior art in other words can be embodied in the form of software product, the computer software product is stored in a storage medium, including some instructions to cause a computer equipment (can be personal computer, server, or the network equipment etc.) or processor (processor) perform all or part of step of each embodiment methods described of the application.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.

Described above, above example is only described in detail to the technical scheme to the application, but the explanation of above example is only intended to the method and its core concept for helping to understand the present invention, should not be construed as limiting the invention.Those skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in should be all included within the scope of the present invention.

Claims

A kind of wireless chain control layer RLC packet shunt methods, it is characterised in that including：

First base station receives the RLC data packet request message that the second base station is sent, wherein, the RLC data packet requests message is used for the first quantity of the RLC packets that second base station asks second base station to be sent by secondary cell to carrier aggregation CA user equipment (UE)s to the first base station, the RLC data packet requests message is that second base station is sent to the first base station at the first moment, time difference between first moment and the second moment is T, wherein T is more than or equal to 2t, second moment be second base station to the UE send the first quantity RLC packets at the time of, the t is the unidirectional transmission time delay between second base station and the first base station；

The first base station is according to the RLC data packet requests message, determine the first base station in T-t durations by the second quantity from main plot to the UE RLC packets sent, wherein the initial time of the T-t durations is the first base station at the time of receive the RLC data packet requests message；

According to the vertical order of sequence number of RLC packets to be sent, the first base station is the second quantity RLC packets before the first base station distribution from the RLC packets to be sent, and be that the first quantity RLC packets are distributed in second base station since first RLC packet after sequence number is located at the preceding second quantity RLC packets；

The first quantity RLC packets are sent to second base station by the first base station.
The method as described in claim 1, it is characterised in that methods described also includes：

The second quantity RLC packets are sent to the UE by the first base station by the main plot.
Method as claimed in claim 2, it is characterised in that methods described also includes：

The first base station receives the confirmation response ACK/ negative response nack messages that the UE is sent by the main plot, and the ACK/NACK information includes the feedback information that the UE is directed to the second quantity RLC packets for the feedback information and the UE of the first quantity RLC packets.
Method as claimed in claim 3, it is characterised in that after the first base station receives the ACK/NACK information that the UE is sent by the main plot, methods described also includes：

If the feedback information for the first quantity RLC packets that the first base station is received includes NACK, the first base station judges that second base station carries out whether hybrid automatic repeat-request HARQ results in HARQ merging gains by secondary cell RLC packets corresponding to the NACK；

If resulting in HARQ merges gain, the NACK is sent to second base station by the first base station, and indicates that second base station retransmits the RLC packets using HARQ modes to the UE.
Method as claimed in claim 4, it is characterised in that the first base station judges that second base station carries out whether HARQ results in HARQ merging gains by secondary cell RLC packets corresponding to the NACK, specifically includes：

When the first base station judges that second base station HARQ number of processes currently used in the secondary cell is less than HARQ maximum number of processes, then the first base station determines that second base station carries out HARQ by secondary cell RLC packets corresponding to the NACK and results in HARQ merging gains.
Method as described in claim 4 or 5, it is characterised in that methods described also includes：

If the first base station judges that second base station carries out HARQ by secondary cell RLC packets corresponding to the NACK and can not obtain HARQ merging gains, the first base station retransmits the corresponding RLC packets of the NACK by the main plot, in HARQ ARQ modes to the UE.
Method as claimed in claim 6, it is characterised in that before the first base station receives the ACK/NACK information that the UE is sent by the main plot, methods described also includes：

The first base station receives the RLC groups inclusion fruit that second base station is sent, and the RLC groups inclusion fruit is used to show that second base station is transferred to the information of the RLC packets of the UE by the secondary cell；Wherein, second base station is transferred to the RLC packets of the UE by the secondary cell, is part or all of in the first quantity RLC packets；

The first base station retransmits the corresponding RLC packets of the NACK by the main plot, in ARQ modes to the UE, specifically includes：

The first base station retransmits the corresponding RLC packets of the NACK by the main plot, in ARQ modes according to RLC groups inclusion fruit to the UE.
Method as described in claim 4 or 5, it is characterised in that methods described also includes：

If the first base station judges that second base station carries out HARQ by secondary cell RLC packets corresponding to the NACK and can not obtain HARQ merging gains, then the NACK is sent to second base station by the first base station, and indicates that second base station retransmits the corresponding RLC packets of the NACK by the secondary cell, in ARQ modes to the UE.
A kind of wireless chain control layer RLC packet shunt methods, it is characterised in that including：

Second base station sends RLC data packet request message to first base station, wherein, the RLC data packet requests message is used for the first quantity of the RLC packets that second base station asks second base station to be sent by secondary cell to carrier aggregation CA user equipment (UE)s to the first base station, the RLC data packet requests message is that second base station is sent to the first base station at the first moment, time difference between first moment and the second moment is T, wherein T is more than or equal to 2t, second moment be second base station to the UE send the first quantity RLC packets at the time of, the t is the unidirectional transmission time delay between second base station and the first base station；

Second base station receives the first quantity RLC packets that the first base station is sent, wherein, the determination process of the first quantity RLC packets includes：According to the RLC data packet requests message, the first base station determine the first base station in T-t durations by the second quantity from main plot to the UE RLC packets sent, at the time of the initial time of wherein described T-t durations is that the first base station receives the RLC data packet requests message, the first base station according to RLC packets to be sent the vertical order of sequence number, it is the second quantity RLC packets before the first base station distribution from the RLC packets to be sent, and since first RLC packet after sequence number is located at the preceding second quantity RLC packets, the first quantity RLC packets are distributed for second base station.
Method as claimed in claim 9, it is characterised in that methods described also includes：

Second base station receives the UE of the first base station transmission for all or part of feedback information in the first quantity RLC packets, and the UE is directed to the first quantity RLC The feedback information of packet belongs to the confirmation response ACK/ negative response nack messages that the UE is sent to the first base station, and the ACK/NACK information also includes the feedback information that the UE is directed to the second quantity RLC packets.
Method as claimed in claim 10, it is characterised in that received in second base station before feedback informations of the UE of the first base station transmission for the first quantity RLC packets, methods described also includes：

Second base station sends RLC groups inclusion fruit to the first base station, and the RLC groups inclusion fruit is used to show that second base station is transferred to the information of the RLC packets of the UE by the secondary cell；Wherein, second base station is transferred to the RLC packets of the UE by the secondary cell, is part or all of in the first quantity RLC packets.
A kind of base station, for first base station, it is characterised in that including：

First receiving module, for receiving the wireless chain control layer RLC data packet request message that the second base station is sent, wherein, the RLC data packet requests message is used for the first quantity of the RLC packets that second base station asks second base station to be sent by secondary cell to carrier aggregation CA user equipment (UE)s to the first base station, the RLC data packet requests message is that second base station is sent to the first base station at the first moment, time difference between first moment and the second moment is T, wherein T is more than or equal to 2t, second moment be second base station to the UE send the first quantity RLC packets at the time of, the t is the unidirectional transmission time delay between second base station and the first base station；

Determining module, for according to the RLC data packet requests message, determine the first base station in T-t durations by the second quantity from main plot to the UE RLC packets sent, wherein the initial time of the T-t durations is the first base station at the time of receive the RLC data packet requests message；

Distribute module, for the vertical order of sequence number according to RLC packets to be sent, it is the second quantity RLC packets before the first base station distribution from the RLC packets to be sent, and be that the first quantity RLC packets are distributed in second base station since first RLC packet after sequence number is located at the preceding second quantity RLC packets；

First sending module, for the first quantity RLC packets to be sent into second base station.
Base station as claimed in claim 12, it is characterised in that the base station also includes second and sent Module, second sending module is used for：

The second quantity RLC packets are sent to by the UE by the main plot.
Base station as claimed in claim 13, it is characterised in that the base station also includes the second receiving module, second receiving module is used for：

The confirmation response ACK/ negative response nack messages that the UE is sent are received by the main plot, the ACK/NACK information includes the feedback information that the UE is directed to the second quantity RLC packets for the feedback information and the UE of the first quantity RLC packets.
Base station as claimed in claim 14, it is characterised in that the base station also includes judge module, is used for：After second receiving module receives the ACK/NACK information that the UE is sent by the main plot, if the feedback information in the ACK/NACK information for the first quantity RLC packets includes NACK, judge that second base station carries out whether hybrid automatic repeat-request HARQ results in HARQ merging gains by secondary cell RLC packets corresponding to the NACK；

First sending module is additionally operable to：If resulting in HARQ merges gain, the NACK is sent to second base station, and indicate that second base station retransmits the RLC packets using HARQ modes to the UE.
Base station as claimed in claim 15, it is characterised in that the judge module specifically for：

When judging that second base station HARQ number of processes currently used in the secondary cell is less than HARQ maximum number of processes, it is determined that second base station carries out HARQ by secondary cell RLC packets corresponding to the NACK and results in HARQ merging gains.
Base station as described in claim 15 or 16, it is characterised in that the base station also includes retransmission module, is used for：

If the judge module judges that second base station carries out HARQ by secondary cell RLC packets corresponding to the NACK and can not obtain HARQ merging gains, then by the main plot, through second sending module, the corresponding RLC packets of the NACK are retransmitted to the UE in HARQ ARQ modes.
Base station as claimed in claim 17, it is characterised in that first receiving module is additionally operable to：

Before second receiving module receives the ACK/NACK information that the UE is sent by the main plot, the RLC groups inclusion fruit that second base station is sent is received, the RLC groups inclusion fruit is used to show that second base station is transferred to the information of the RLC packets of the UE by the secondary cell；Wherein, second base station is transferred to the RLC packets of the UE by the secondary cell, is part or all of in the first quantity RLC packets；

The retransmission module specifically for：According to RLC groups inclusion fruit, by the main plot, through second sending module, the corresponding RLC packets of the NACK are retransmitted to the UE in ARQ modes.
Base station as described in claim 15 or 16, it is characterised in that first sending module is additionally operable to：

If the judge module judges that second base station carries out HARQ by secondary cell RLC packets corresponding to the NACK and can not obtain HARQ merging gains, the NACK is then sent to second base station, and indicates that second base station retransmits the corresponding RLC packets of the NACK by the secondary cell, in ARQ modes to the UE.
A kind of base station, for the second base station, it is characterised in that including：

First sending module, for sending wireless chain control layer RLC data packet request message to first base station, wherein, the RLC data packet requests message is used for the first quantity of the RLC packets that second base station asks second base station to be sent by secondary cell to carrier aggregation CA user equipment (UE)s to the first base station, the RLC data packet requests message is that second base station is sent to the first base station by first sending module at the first moment, time difference between first moment and the second moment is T, wherein T is more than or equal to 2t, second moment be second base station by the second sending module to the UE send the first quantity RLC packets at the time of, the t is the unidirectional transmission time delay between second base station and second base station；

First receiving module, for receiving the first quantity RLC packets that the first base station is sent, wherein, the determination process of the first quantity RLC packets includes：According to the RLC data packet requests message, the first base station determine the first base station in T-t durations by the second quantity from main plot to the UE RLC packets sent, wherein the initial time of the T-t durations be described first At the time of base station receives the RLC data packet requests message, the first base station according to RLC packets to be sent the vertical order of sequence number, it is the second quantity RLC packets before the first base station distribution from the RLC packets to be sent, and be that the first quantity RLC packets are distributed in second base station since first RLC packet after sequence number is located at the preceding second quantity RLC packets.
Base station as claimed in claim 20, it is characterised in that first receiving module is additionally operable to：

The UE of the first base station transmission is received for all or part of feedback information in the first quantity RLC packets, the UE belongs to the confirmation response ACK/ negative response nack messages that the UE is sent to the first base station for the feedback information of the first quantity RLC packets, and the ACK/NACK information also includes the feedback information that the UE is directed to the second quantity RLC packets.
Base station as claimed in claim 21, it is characterised in that first sending module is additionally operable to：

Before first receiving module receives feedback informations of the UE of the first base station transmission for the first quantity RLC packets, RLC groups inclusion fruit is sent to the first base station, the RLC groups inclusion fruit is used to show that second base station is transferred to the information of the RLC packets of the UE by the secondary cell, through second sending module；Wherein, second base station is transferred to the RLC packets of the UE by the secondary cell, through second sending module, is part or all of in the first quantity RLC packets.
A kind of base station, for first base station, it is characterised in that including memory, processor and interface；

The memory, for store instruction；

The interface, for receiving the wireless chain control layer RLC data packet request message that the second base station is sent, wherein, the RLC data packet requests message is used for the first quantity of the RLC packets that second base station asks second base station to be sent by secondary cell to carrier aggregation CA user equipment (UE)s to the first base station, the RLC data packet requests message is that second base station is sent to the first base station at the first moment, time difference between first moment and the second moment is T, wherein T is more than or equal to 2t, second moment is that second base station sends the first quantity RLC numbers to the UE At the time of according to bag, the t is the unidirectional transmission time delay between second base station and the first base station；

The processor, calls the instruction of the memory, for performing：According to the RLC data packet requests message, determine the first base station in T-t durations by the second quantity from main plot to the UE RLC packets sent, wherein the initial time of the T-t durations is the first base station at the time of receive the RLC data packet requests message；And, according to the vertical order of sequence number of RLC packets to be sent, it is the second quantity RLC packets before the first base station distribution from the RLC packets to be sent, and be that the first quantity RLC packets are distributed in second base station since first RLC packet after sequence number is located at the preceding second quantity RLC packets；

The processor, is additionally operable to that the first quantity RLC packets are sent into second base station by the interface.
Base station as claimed in claim 23, it is characterised in that the base station also includes transceiver；The processor is additionally operable to：

By the main plot, through the transceiver, the second quantity RLC packets are sent to the UE.
Base station as claimed in claim 24, it is characterised in that the transceiver is additionally operable to：

The confirmation response ACK/ negative response nack messages that the UE is sent are received by the main plot, the ACK/NACK information includes the feedback information that the UE is directed to the second quantity RLC packets for the feedback information and the UE of the first quantity RLC packets.
Base station as claimed in claim 25, it is characterised in that the processor is additionally operable to：

After the transceiver receives the ACK/NACK information that the UE is sent by the main plot, if the feedback information in the ACK/NACK information for the first quantity RLC packets includes NACK, judge that second base station carries out whether hybrid automatic repeat-request HARQ results in HARQ merging gains by secondary cell RLC packets corresponding to the NACK；And, if resulting in HARQ merges gain, the NACK is sent to by second base station by the interface, and indicate that second base station retransmits the RLC packets using HARQ modes to the UE.
Base station as claimed in claim 26, it is characterised in that the processor is additionally operable to judge that second base station carries out HARQ by secondary cell RLC packets corresponding to the NACK and is The no HARQ that results in merges gain, is specially：

When judging that second base station HARQ number of processes currently used in the secondary cell is less than HARQ maximum number of processes, it is determined that second base station carries out HARQ by secondary cell RLC packets corresponding to the NACK and results in HARQ merging gains.
Base station as described in claim 26 or 27, it is characterised in that the processor is additionally operable to：

If judging, second base station carries out HARQ by secondary cell RLC packets corresponding to the NACK and can not obtain HARQ merging gains, then by the main plot, through the transceiver, the corresponding RLC packets of the NACK are retransmitted to the UE in HARQ ARQ modes.
Base station as claimed in claim 28, it is characterised in that the interface is additionally operable to：Before the transceiver receives the ACK/NACK information that the UE is sent by the main plot, the RLC groups inclusion fruit that second base station is sent is received, the RLC groups inclusion fruit is used to show that second base station is transferred to the information of the RLC packets of the UE by the secondary cell；Wherein, second base station is transferred to the RLC packets of the UE by the secondary cell, is part or all of in the first quantity RLC packets；

The processor is additionally operable to by the main plot, through the transceiver, is retransmitted the corresponding RLC packets of the NACK to the UE in ARQ modes, is specially：According to RLC groups inclusion fruit, by the main plot, through the transceiver, the corresponding RLC packets of the NACK are retransmitted to the UE in ARQ modes.
Base station as described in claim 26 or 27, it is characterised in that the processor is additionally operable to：

If judging, second base station carries out HARQ by secondary cell RLC packets corresponding to the NACK and can not obtain HARQ merging gains, the NACK is then sent to by second base station by the interface, and indicates that second base station retransmits the corresponding RLC packets of the NACK by the secondary cell, in ARQ modes to the UE.
A kind of base station, for the second base station, it is characterised in that including memory, processor, interface and transceiver；

The memory, for store instruction；

The processor, calls the instruction of the memory storage, for performing：Connect by described Mouth sends wireless chain control layer RLC data packet request message to first base station, wherein, the RLC data packet requests message is used for the first quantity of the RLC packets that second base station asks second base station to be sent by secondary cell to carrier aggregation CA user equipment (UE)s to the first base station, the RLC data packet requests message is that the processor is sent to the first base station at the first moment by the interface, time difference between first moment and the second moment is T, wherein T is more than or equal to 2t, second moment be the processor by the transceiver to the UE send the first quantity RLC packets at the time of, the t is the unidirectional transmission time delay between second base station and the first base station；

The interface, for receiving the first quantity RLC packets that the first base station is sent, wherein, the determination process of the first quantity RLC packets includes：According to the RLC data packet requests message, the first base station determine the first base station in T-t durations by the second quantity from main plot to the UE RLC packets sent, at the time of the initial time of wherein described T-t durations is that the first base station receives the RLC data packet requests message, the first base station according to RLC packets to be sent the vertical order of sequence number, it is the second quantity RLC packets before the first base station distribution from the RLC packets to be sent, and since first RLC packet after sequence number is located at the preceding second quantity RLC packets, the first quantity RLC packets are distributed for second base station.
Base station as claimed in claim 31, it is characterised in that the interface is additionally operable to：

The UE of the first base station transmission is received for all or part of feedback information in the first quantity RLC packets, the UE belongs to the confirmation response ACK/ negative response nack messages that the UE is sent to the first base station for the feedback information of the first quantity RLC packets, and the ACK/NACK information also includes the feedback information that the UE is directed to the second quantity RLC packets.
Base station as claimed in claim 32, it is characterised in that the processor is additionally operable to：

Before feedback informations of the UE that first base station described in the interface is sent for the first quantity RLC packets, RLC groups inclusion fruit is sent to the first base station by the interface, the RLC groups inclusion fruit is used to show that the processor is transmitted by the secondary cell, through the transceiver Information to the RLC packets of the UE；Wherein, the processor is transferred to the RLC packets of the UE by the secondary cell, through the transceiver, is part or all of in the first quantity RLC packets.